Interlayer Exchange Coupling in Asymmetric Co-Fe/Ru/Co-Fe Trilayers Investigated with Broadband Temperature-Dependent Ferromagnetic Resonance

dc.contributor.authorKhodadadi, Behrouz
dc.contributor.authorMohammadi, Jamileh Beik
dc.contributor.authorJones, Joshua Michael
dc.contributor.authorSrivastava, Abhishek
dc.contributor.authorMewes, Claudia
dc.contributor.authorMewes, Tim
dc.contributor.authorKaiser, Christian
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2018-08-31T13:55:08Z
dc.date.available2018-08-31T13:55:08Z
dc.date.issued2017
dc.description.abstractWe report on a comprehensive study of the interlayer exchange coupling in Co-Feð5 nmÞ=RuðtÞ= Co-Feð8 nmÞ trilayers ðt ¼ 0.8;…; 2.8 nmÞ using broadband ferromagnetic resonance. A systematic frequency dependence of the field separation between the acoustic and optic modes is found, which is caused by different effective magnetizations of the two ferromagnetic layers. Hence, it is shown that the broadband measurements are vital for reducing the systematic error margins in the determination of interlayer exchange coupling using ferromagnetic resonance. We also investigate the temperature dependence of the interlayer exchange coupling and compare our results with existing theories. It is shown that models which take into account the temperature dependence due to thermal excitations of spin waves within the ferromagnetic layers have a considerably better agreement with the experiment than models solely based on spacer and interface contributions to the temperature dependence.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationKhodadadi, B., et al. (2017): Interlayer Exchange Coupling in Asymmetric Co-Fe/Ru/Co-Fe Trilayers Investigated with Broadband Temperature-Dependent Ferromagnetic Resonance, Physical Review Applied 8.
dc.identifier.urihttp://ir.ua.edu/handle/123456789/3798
dc.subjectFerromagnetism
dc.subjectFerromagnetic resonance
dc.titleInterlayer Exchange Coupling in Asymmetric Co-Fe/Ru/Co-Fe Trilayers Investigated with Broadband Temperature-Dependent Ferromagnetic Resonanceen_US
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